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bill owens

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    Anyone seeing thumbnails in Bridge for Canon Mark III?

    in The Digital Darkroom: Process, Technique & Printing

    Posted

    Is anyone using Adobe Bridge CS3 seeing Mark III RAW thumbnails?

     

    Another posting from Dec 14 was looking for a solution to Bridge CS3 not

    showing Mark III RAW thumbnail images. Loading the new plugin (8bi file) into

    the correct folder and purging the cache did not help.

     

    Just looking for a confirmation that they can be seen; not interested in other

    software (like DPP) being able to see them.

     

    Thanks

    XTi shutter half-press dependent on metering mode?

    in Canon EOS Mount

    Posted

    Henry,

     

    I guess the short answer is that the camera is working as designed. I'm not sure I understand the logic. It seems to me if you want to meter on a key subject then recompose with the subject off-center, you'd want to be able to meter and focus on the key subject with the shutter half-press, recompose and shoot. I can use the * button but it seems that if you're allowed to AE-lock for evaluative you should certainly be able to do it for partial. Why? Because evaluative is far less sensitive to recomposiiton in terms of metering. Anyway, I'll use the * if I must (I hate this "double action" when taking hundreds of stage shots, where metering on center then recomposing works best for the particular subject matter I'm shooting).

    XTi shutter half-press dependent on metering mode?

    in Canon EOS Mount

    Posted

    I have custom function 4 set on 0 (AE/AF lock with shutter half-press). If I'm

    in evaluative metering, the exposure locks after half-press, but in partial

    metering, it won't lock. AF is set to center-point. Is this the expected

    behavior?

     

    P.S. The manual (p. 159) indicates that in evaluative metering AE lock is

    determined by the "AF point that achieved focus" and in partial "at the center

    AF point." Since I'm only using the center, I'm not sure why the behavior is

    different.

    Auto ISO on 40D

    in Canon EOS Mount

    Posted

    Thanks for the responses. Why is Canon avoiding such a useful feature? I just looked at the Mark III's manual and it doesn't seem to do much better (it has an ISO range setting but no min/max speeds/apertures).

     

    Last year I shot a stage performance with rapidly shifting light using a D200 with auto ISO enabled and it was a great, if not perfect. The perfect implementation would be (1) set the ISO range (optional), (2) set a minimum and maximum speed for Av, and a minimum and maximum aperture for Tv, (3) set your default/preferred ISO, (4) shoot.

     

    So, for example, if shooting action in rapidly varying light, you might decide that 1/200th is the minimum you can tolerate to stop motion; if you open the lens to the widest you can tolerate for DOF, and there's not enough light, the camera shifts the initial ISO up to compensate (but not beyond the highest level you've set in the range setting). This means you stop motion in low light but reduce noise in bright light. In this scheme, if the light gets really bright, and you've set the max speed to, say, 1/1000th because you know anything above that is wasted, the auto ISO would lower the initial ISO for ideal noise reduction.

     

    Likewise if you're in Tv mode, and you want to ensure a minimum or maximum DOF in quickly changing light conditions, this feature could be useful.

     

    If you're fast enough to change speed/aperture and ISO on the fly, then this "noise reduction" feature may not be useful.

     

    Would this really be that hard to implement?

     

    Maybe on the 50D...

    Auto ISO on 40D

    in Canon EOS Mount

    Posted

    Just looked at a 40D manual trying to figure out how the Auto ISO works in Tv

    and Av modes. It says, for Tv, the ISO will be set automatically within 100-800

    "to obtain a standard exposure." What exactly does that mean? Can't I select a

    min. speed or or a max. aperture beyond which ISO will increase automatically?

    If not, what can I expect to happen?

    70-200 F/2.8 IS and 3rd-Generation-IS

    in Canon EOS Mount

    Posted

    What an unusual coincidence--I haven't posted on photo.net in months and I just signed on to ask the exact same question.

     

    Nick, it seems that only Emre has attempted to directly answer your question. Although the odds might be slim, the 70-200 is a flagship lens for Canon, and the new IS technology is available and proven in the f4. It doesn't seem unreasonable that a new 2.8 might be in the works.<br><br>

    I do a fair amount of indoor theater/dance shooting, mostly tripod mounted. I don't need the IS for camera-shake so much as the speed for subject motion, so I am looking at selling my f4 non-IS for the f2.8 non-IS. I don't mind paying for the IS, but there seems to be enough testing, such as <a href=http://www.wlcastleman.com/equip/reviews/70_200>here</a>, showing a noticeable resolution advantage for the f2.8 non-IS over the f2.8 IS. But if there's evidence a new, sharper f2.8 IS will arrive within less than a year or so, I?d certainly wait. Any rumors out there?

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